More work on CuraEngineBackend (and backend in general)

Commands/TransferMeshCommand.py

@@ -0,0 +1,9 @@
+from Cura.Backend.Command import Command
+from Cura.plugins.CuraBackendEngine.Commands.TransferVertCommand import TransferVertCommand
+
+class TransferMeshCommand(Command):
+    def __init__(self):
+        super(TransferMeshCommand,self).__init__()
+    
+    def send(self, mesh_data):
+        vertices = mesh_data.getVerticesList()

Commands/TransferMeshesCommand.py

@@ -0,0 +1,12 @@
+from Cura.Backend.Command import Command
+from Cura.plugins.CuraBackendEngine.Commands.TransferMeshCommand import TransferMeshCommand
+
+class TransferMeshesCommand(Command):
+    def __init__(self):
+        super(TransferMeshesCommand,self).__init__()
+        
+    def send(self, meshes):
+        command = TransferMeshCommand(self._socket)
+        for mesh in meshes:
+            command.send(mesh)
+            

Commands/TransferVertCommand.py

@@ -0,0 +1,8 @@
+from Cura.Backend.Command import Command
+
+class TransferVertCommand(Command):
+    def __init__(self):
+        super(TransferVertCommand,self).__init__()
+         
+    def send(self):
+        self._socket.sendData(self._id, self._data)

TransferMeshCommand.py

@@ -1,6 +0,0 @@
-from Cura.Backend.Command import Command
-
-class TransferMeshCommand(Command):
-    def __init__(self):
-        super(TransferMeshCommand,self).__init__()
-